FORCE AND LAWS OF MOTION

A hammer having a mass of 1 kg going with a speed of 6 m/s hits a wall and comes to rest in 0.1 sec. Compute the obstacle force that makes the hammer stop.

Solution: Mass of Hammer, m = 1 kgInitial Velocity, u = 6 m/sFinal Velocity, v = 0 m/sTime Taken, t = 0.1 sThe acceleration is: a = (v – u )/t a = ( 0 m/s – 6 m/s ) / 0.1 sec Therefore, a = – 60 m/s2 [-ve sign means retardation]Thus, the retarding …

A hammer having a mass of 1 kg going with a speed of 6 m/s hits a wall and comes to rest in 0.1 sec. Compute the obstacle force that makes the hammer stop. Read More »

Force

The push or pull on an object with mass causes it to change its velocity. Force is an external agent capable of changing a body’s state of rest or motion. It has a magnitude and a direction. The direction towards which the force is applied is known as the direction of the force, and the …

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